---
title: "Rescore Evaluation"
method: POST
path: "/evaluations/rescore"
tags: ["Evaluations"]
---

# Rescore Evaluation

`POST /evaluations/rescore`

Rescore an existing evaluation run with different scorer(s).

Applies the provided scorer(s) to the predictions from source_evaluation_run_id
and returns a new evaluation_run_id. Original prediction call IDs are preserved.

## Request body

- RescoreReq — Full rescore request including server-set fields.
  - `source_evaluation_run_id` string, required — The evaluation run whose predictions will be rescored
  - `scorer_refs` string[], required — Scorer references (weave:// URIs) to apply; must be non-empty
  - `project_id` string, required
  - `wb_user_id` string, nullable — Do not set directly. Server will automatically populate this field.

## Response `200`

Successful Response

- RescoreRes — Response for a rescore request.
  - `call_id` string, required — Call ID for /evaluations/status polling
  - `evaluation_run_id` string, required — The newly created EvaluationRun ID

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.net/wandb/apis/serverless-training.md) · [All operations](https://skmtc.net/wandb/apis/serverless-training/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/wandb/serverless-training/revisions/8d8d96fc0fd3/schema)